I'm new to Supercharging and need help with a surging problem.
I finished installing a V1 SC-Trim this weekend, it runs great while
accelerating but won't hold a constant speed on the road with out
surging. If I hold My foot steady, It's kind of like 5 seconds of normal followed by 4 seconds of no power and then back to normal, never ending cycle. It seems to be loading up, when I make a slow turn around, it coughs, pops and bucks until I blip the throttle hard to clear it.
I thought it might be the FMU so I bypassed it to see how it would drive at part throttle, no change at all. So, I think fuel delivery is good, air delivery is real good (6 lbs.) and now I'm wondering about the possibility that it could be spark related. I would really appreciate any input. Here are the motor details.
302, stock compression
12:1 Vortech FMU, supplied with kit.
Adjustable FP regulator, set to 38lbs. at idle, hose off.
Walbro 155 LPH in tank fuel pump.
Stock TFI distributor.
10 degrees base timing, spout out.
new plugs gapped at .030
MSD 6A
65mm TB
75mm MAF
24 lb. injectors
E303 cam
Thanks; Tom
I finished installing a V1 SC-Trim this weekend, it runs great while
accelerating but won't hold a constant speed on the road with out
surging. If I hold My foot steady, It's kind of like 5 seconds of normal followed by 4 seconds of no power and then back to normal, never ending cycle. It seems to be loading up, when I make a slow turn around, it coughs, pops and bucks until I blip the throttle hard to clear it.
I thought it might be the FMU so I bypassed it to see how it would drive at part throttle, no change at all. So, I think fuel delivery is good, air delivery is real good (6 lbs.) and now I'm wondering about the possibility that it could be spark related. I would really appreciate any input. Here are the motor details.
302, stock compression
12:1 Vortech FMU, supplied with kit.
Adjustable FP regulator, set to 38lbs. at idle, hose off.
Walbro 155 LPH in tank fuel pump.
Stock TFI distributor.
10 degrees base timing, spout out.
new plugs gapped at .030
MSD 6A
65mm TB
75mm MAF
24 lb. injectors
E303 cam
Thanks; Tom
